AQA GCSE Biology Paper 1 Sample 2023
Want to master the first exam board's toughest Biology Paper 1 in just 45 minutes? This sample paper reveals exactly how AQA tests your understanding of cells, body systems, and energy transfer — the three pillars that decide whether you score a 7 or a 9. You'll face realistic questions mixing recall, calculations, and real-world applications, including the tricky distinction between prokaryotic and eukaryotic cells, enzyme kinetics, and photosynthesis equations. Built for Year 11 students revising AQA GCSE Biology or anyone wanting to gauge their readiness for Paper 1. After you complete this, you'll spot the pattern in AQA's mark schemes and know exactly which facts to anchor in your memory.
Questions in this quiz
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- Question 1
A student observes a cell under a light microscope with a magnification of ×400. The cell measures 2 mm on the screen. What is the actual size of the cell?
- Question 2
Which of the following is found in prokaryotic cells but NOT in eukaryotic cells?
- Question 3
A student compares plant and animal cells. Which statement is correct?
- Question 4
An enzyme has an optimum temperature of 37 °C. What would happen to the rate of reaction if the temperature were increased to 50 °C?
- Question 5
Which of the following correctly describes aerobic respiration?
- Question 6
During photosynthesis, in which structure of the chloroplast does the light-dependent reaction occur?
- Question 7
A plant is supplied with carbon dioxide containing the radioactive isotope C-14. After photosynthesis, where would you first detect the C-14?
- Question 8
Which of the following best describes the role of active transport in cells?
- Question 9
A red blood cell is placed in a hypertonic solution. What will happen?
- Question 10
The human circulatory system transports many substances. Which substance would NOT typically be transported by the blood?
- Question 11
A student investigates the effect of pH on the activity of an enzyme. At pH 2, the enzyme shows 5% activity. At pH 7, it shows 100% activity. At pH 12, it shows 2% activity. Which conclusion is most appropriate?
- Question 12
A specialised cell in a plant root is responsible for absorbing mineral ions against the concentration gradient. Which adaptation would NOT be useful for this cell?
- Question 13
In a mitochondrion, the cristae are the site of which process?
- Question 14
A student places a fresh potato cube in distilled water. Over time, the potato becomes firm and rigid. Which process explains this?
- Question 15
During aerobic respiration, the Krebs cycle produces NADH and FADH₂. What is the role of these molecules in the electron transport chain?